KR102115017B1 - Sealing device for check device and sealing system of brake hose check apparatus equipped with the coupler module - Google Patents

Abstract

The present invention relates to a sealing device for testing pressure and a sealing system of a brake hose pressure test device having the same which are applied to a brake hose pressure test device compatible with brake hoses of various sizes to automatically perform a pressure test, and come in contact with a metal fitting of a brake hose. According to the present invention, the sealing device for testing pressure comprises: a coupler module (400) including an inner support pipe (410) formed in a smaller size than a first and a second metal fitting (2, 3), an outer support pipe (420) arranged on a concentric circle with the inner support pipe (410) and formed in an expanded size in comparison to the first and second metal fittings (2, 3), and a sealing block (430) arranged between the inner and outer support pipes (410, 420), and provided with an airtight surface (432) sealed in surface contact with the ends of the first and second metal fittings (2, 3); a holder unit (454) allowing the coupler module (400) to be inserted into the center therein; and a plug body (450) allowing the holder unit (454) to be bolt-fastened to one side thereof, and having a connector (452) formed on the other side thereof to be coupled to a pressure test device.

Description

Sealing device for check pressure and sealing system of brake hose equipped with the sealing device {Sealing device for check device and sealing system of brake hose check apparatus equipped with the coupler module}

The present invention is a sealing system for a pressure gauge sealing device and a brake hose pressure measuring device equipped with the sealing device, which will be described in more detail to a brake hose pressure gauge device that can automatically perform pressure testing by being compatible with brake hoses of various standards. It is applied and relates to a sealing device for pressure gauge contacting a bracket of a brake hose and a sealing system for a brake hose pressure gauge equipped with the sealing device.

The brake hose, which is one of the components that make up the brake system of an automobile, is a pipe for transmitting hydraulic pressure between a chassis and a wheel. It is composed by selectively combining a pimel bracket and an eye joint bracket on both ends of the hose. , The shape, outer diameter, angle and length of each bracket are provided. Accordingly, the workman manually assembles the brake hose and bracket configuration through manual work, and then puts it into a pressure gauge that is appropriately set according to the type of brake hose, but performs a pressure leak inspection, but due to the nature of the manual work, productivity decreases and labor costs increase. Competitiveness is weakening.

Accordingly, as disclosed in Patent Publication No. 10-2017-0105219, an inspection device for an automatic assembly device for checking the fastening state of a hose and a bracket, a first inspection unit for checking the fastening state of one end of the hose and a straight die And a second inspection unit for confirming the fastening state of the other end of the hose and the curved bracket, wherein the first inspection unit and the second inspection unit provide a pneumatic pressure gauge that provides air pressure to the fastening portion of the hose and the metal fitting, and the pressure gauge. A technology including a support assembly including a pressure assembly having a rotational motor providing rotational movement power of a linear motor and a linear motor coupled to one side of the pressure detection assembly and providing linear movement power of the pressure detection assembly has been previously disclosed. .

In addition, in the other prior art Patent Publication No. 10-2018-0094382, when a vehicle part with a packing is manufactured, as a facility to automatically check the leak of the packing, a jig in which the part is mounted to seal the packing, and a jig A multi-axis moving device that automatically mounts and detaches a measuring device and components, including an injection means for injecting high-pressure gas into the inside, and a measurement means for measuring the internal pressure of the jig by sealing action, and moves it to a post-processing device. A technique including has been previously disclosed.

However, the prior art is a technique for automatically performing a leak inspection, but since the pressure gauge (jig) connected to the bracket (part) for injecting compressed air of high pressure is hermetically treated by normal packing, it is 150 ~ After repeated exposure to 170kgf high-pressure compressed air, it is easily worn and deformed and needs to be replaced every 2 to 5 days. Especially, to replace the packing, the maintenance time is delayed because the pressure gauge (jig) must be completely disassembled, which causes the pressure gauge to operate significantly. A declining ailment followed.

In the present invention, as a new technology was devised to solve the above-mentioned problems in the prior art, the coupler module that is connected to the bracket in the process of inspecting the brake hose is sealed in a surface contact manner and repeatedly exposed to high pressure compressed air of 150 ~ 170kgf. It is an object of the present invention to provide a sealing device for pressure detection, in which the load is distributed throughout the block to minimize pressure leakage due to wear and deformation.

In addition, the object of the present invention is to provide a high-pressure sealing system for a brake hose intensifier that reduces the cost of maintenance and improves the operating ratio of the intensifier by promptly replacing the coupler module when a pressure leak occurs.

In the present invention as a specific means for solving the problems of the above-described invention, a sealing device for pressure inspection is configured,

The first and second brackets (2) and (3) are provided on the inner support tube 410, which is formed in a smaller size than the inner diameter, and on the concentric circles with the inner support tube 410, and the first and second brackets (3) (3) ) It is provided between the outer support pipe 420 and the inner and outer support pipes 410 and 420 formed in an expanded size compared to the outer diameter, and sealing the surface contact at the ends of the first and second brackets 2 and 3 A coupler module 400 including a sealing block 430 on which an airtight surface 432 is formed;

A holder portion 454 into which the coupler module 400 is inserted into the inner center;

It is characterized in that it consists of a plug body 450, which is bolted to the holder part 454 on one side, and a connector 452 for coupling to a pressure measuring device on the other side.

Another specific means is to construct a sealing system for a brake hose pressure gauge equipped with a sealing device,

The high pressure of the brake hose pressure gauge formed by fastening the first bracket (2) composed of a pimel bracket to one end of the brake hose (1), and the second bracket (3) composed of a pimel bracket or an eye joint bracket to the other end In the sealing system,

It is connected to the first bracket and injects a nozzle (14) for introducing compressed air, a shut-off valve (24) for closing the second bracket, and is connected to the injection nozzle (14), and supplies compressed air to brake hose (1) The first and second brackets (2) (3) are installed detachably on the injection nozzle (14) and the shut-off valve (24) and the pneumatic inspection unit (30) provided to measure pressure leaks and clogging defects. It comprises a coupler module 400 for sealing,

The coupler module 400,

The first and second brackets (2) (3) inner support tube 410 formed of a smaller size than the inner diameter,

The inner support tube 410 and the outer support tube 420 is provided on a concentric circle, and is formed in an expanded size compared to the outer diameter of the first and second brackets (3) (3),

The sealing block 430 is provided between the inner and outer support pipes 410 and 420, and an airtight surface 432 is formed so as to be surface-contact sealed at the ends of the first and second brackets 2 and 3 It is characterized by being made.

According to a specific means for solving the above-described problem, the sealing device for pressure inspection of the present invention is a sealing block even if the coupler module connected to the bracket during the pressure check process of the brake hose is sealed in a surface contact method and repeatedly exposed to 150 to 170 kgf high pressure compressed air. The load is distributed throughout to minimize pressure leakage caused by wear and deformation.

Instead of sealing with the existing O-ring, the thickness of the airtight surface that comes into contact with the bracket is increased and the use of a high-hardness resin material prolongs the service life, especially when pressure leaks occur. It has the effect of reducing costs and improving the operation rate of the pressure gauge.

1 is a perspective view showing a partial configuration of a pressure measuring device to which the high pressure sealing system provided by the present invention is applied.
2 to 3 is a schematic view showing an enlarged longitudinal and transverse pressure stage of a brake hose pressure gauge to which a high pressure sealing system according to an embodiment of the present invention is applied.
4 to 5 is an enlarged cross-sectional view showing a state of use of the sealing device for pressure inspection provided in the present invention.
Figure 6 is a block diagram showing a pneumatic inspection unit of the high pressure sealing system of the brake hose pressure gauge according to an embodiment of the present invention.
7 is a block diagram showing the overall brake hose pressure gauge is applied to a high pressure sealing system according to an embodiment of the present invention.
Figure 8 is a block diagram showing a brake hose pressure gauge applied to the high pressure sealing system according to an embodiment of the present invention from the side.
9 is a block diagram showing a modified example of a horizontal pressure check stage shut-off valve of a brake hose intensifier to which a high pressure sealing system according to an embodiment of the present invention is applied.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 is a block diagram showing a high-pressure sealing system of a brake hose pressure gauge according to an embodiment of the present invention as a whole, and FIGS. 2 to 3 are types of brake hose pressure gauges to which a high-pressure sealing system according to an embodiment of the present invention is applied, This is an enlarged view showing the horizontal pressure stage.

In FIG. 1, a high pressure sealing system of a brake hose intensifier according to the present invention includes an injection nozzle 14 that is fastened to the first bracket to input compressed air, and a shut-off valve 24 to close the second bracket, It is connected to the injection nozzle 14, by supplying compressed air to the brake hose (1) pressure leak and clogging defects are provided to measure 30, the injection nozzle 14 and the shut-off valve (24) It is detachably installed and includes a coupler module 400 for sealing the first and second brackets 2 and 3, and the coupler module 400 includes an inner support tube 410 and an outer support tube 420. ), The sealing block 430 is formed in a unitary structure.

4 to 5 is a cross-sectional view showing an enlarged state of use of the sealing device for pressure inspection provided by the present invention, the sealing device for pressure detection is largely a coupler module 400, and a holder portion into which the coupler module 400 is inserted ( 454), and the holder portion 454 is bolted to one side, the other side includes a plug body 450 is formed a connector 452 for coupling to the pressure gauge.

A preferred embodiment of the sealing device for pressure inspection will be described with reference to FIG. 4A. First, the support tube 410 is formed in a smaller size than the inner diameter of the first and second brackets (2) (3). The inner support tube 410 is formed of a metal tube or a high-strength synthetic resin tube, and is provided to support the inner circumferential surface of the sealing block 430, which will be described later. Accordingly, deformation in the inner direction of the sealing block 430 exposed to the high-pressure compressed air of 150 to 170 kgf in a non-contact state with the first and second brackets (2) (3) during the pressure check process is prevented.

In addition, the outer support tube 420 is provided on the inner support tube 410 and concentric circles, and is formed in an expanded size compared to the outer diameters of the first and second brackets 3 and 3. The outer support tube 420 is formed of a metal tube or a high-strength synthetic resin tube in the same manner as the inner support tube 410, and is provided to support the outer circumferential surface of the sealing block 430, which will be described later. Accordingly, the deformation of the sealing block 430 exposed to the high pressure compressed air of 150 to 170 kgf in a non-contact state with the first and second brackets (2) and (3) during the pressure check process is prevented.

In addition, the sealing block 430 according to the present invention is provided between the inner and outer support pipes 410 and 420, and the airtight surface 432 to be surface-contact sealed at the ends of the first and second brackets 2 and 3 It is formed. The sealing block 430 is an elastic polymer including urethane, silicone, and synthetic rubber, and is combined in a manner of filling and curing a melt between the inner and outer support tubes 410 and 420 to form an integral coupler module 400 It is formed.

As described above, the sealing block 430 is formed in a tubular shape, and the inner and outer diameters are supported by the inner and outer support tubes 410 and 420, so that even if exposed to high pressure compressed air of 150 to 170 kgf, deformation in the inner and outer directions is possible. One end of the sealing block 430, which is prevented and exposed to both ends of the coupler module 400, is tightly closed to the injection nozzle 14 and the shutoff valve 24, and the other end is formed with an airtight surface 432. , It is in surface contact with the ends of the two brackets (2) (3) to be sealed.

Thus, even if 150 ~ 170kgf high pressure compressed air injection pressure and release pressure are repeatedly applied during the brake hose 1 inspection process, the sealing block is sealed through the airtight surface 432 that is in surface contact with the ends of the first and second brackets (2) (3). (430) The pressure load phenomenon due to damage to the surface contact sealing area is prevented due to the distribution of compressed load as a whole, and the service life is prolonged.

4 (b) to 5 (b), the airtight surface 432 of the sealing block 430, the first and second brackets (2) (3), the inclined expansion portion 440 is extended so that the outer diameter is accommodated , The outer circumferential surface of the inclined expansion pipe 440 is supported by the outer extension portion 422 of the outer support pipe 420 to be maintained in shape. Accordingly, when the brake hose 1 is automatically loaded by the robot arm 52 of the transfer hand unit 50, the first and second brackets 2 and 3 are guided by the inclined expansion tube 440 to seal the block 430. And concentric circles.

In addition, the first and second brackets (2) (3) as the inner diameter of the inclined dilated portion 440 is reduced by the amount by which the airtight surface 432 is deformed when the pressure of 150 to 170 kgf high-pressure compressed air is applied during the inspection process. ) The outer diameter is pressurized, thereby improving the sealing airtightness and the pressure check process by cross-sectioning the outer and outer diameters of the first and second brackets (2) (3) by two-sided contact by the airtight surface 432 and the inclined expansion portion 440. The flow of the first and second brackets 2 and 3 at is prevented, and the wear rate of the hermetic surface 432 due to friction is significantly reduced.

4 to 6, the coupler module 400 is detachably mounted on the plug body 450, and at one end of the plug body 450, the connector 452 is connected to the injection nozzle 14 and the shut-off valve 24 Is formed, the other end of the coupler module 400, the outer support pipe 420, the holder portion 454 is formed is supported, the holder portion 454 and the coupler module 400 is a locking jaw 401 (455) It is provided to be locked by interlocking with each other. The connector 452 is mounted in the insertion hole of the injection nozzle 14 and the shut-off valve 24 and is fixed in position in a one-touch manner by a stop pin.

On the other hand, in Figures 4 to 5, the connector 452 shows a state formed in a tubular shape, but this is the injection nozzle 14 side connection port 452 connected to the pneumatic inspection unit 30, as shown in Figure 2, because compressed air is transported 3, the shut-off valve 24 side connection port 452 has a closed structure as shown in FIG.

Then, the holder portion 454, into which the coupler module 400 is inserted into the inner center, is bolted to the plug body 450 and is detachably installed, and a locking jaw 455 is formed at the inner circumferential front end to form a coupler module 400 ) Is engaged with the engaging jaw 401 formed on the outer diameter of the.

Accordingly, when the coupler module 400 reaches its end of life, the plug body 450 is removed by one-touch method and replaced with a new part, and then the holder portion 454 is disassembled to the separated plug body 450 to end the life of the coupler module. After the 400 is replaced, the maintenance work is performed as a preparation process for the spare, that is, a rapid partial replacement of the coupler module 400 when a pressure leak occurs, thereby reducing maintenance costs and reducing the incubator downtime. Improvement is planned.

In addition, a central block 460 is provided between the injection nozzle 14 and the shutoff valve 24 and the coupler module 400, and the central block 460 is an inner extension portion 412 of the inner support tube 410. 4 may be integrally formed with the sealing block 430 as shown in FIG. 4 or separated from the sealing block 430 as shown in FIG. 5.

The outer diameter of the central block 460 is formed to be expanded in size compared to the outer diameter of the outer support tube 420 so that the locking jaw 401 is formed. The central block 460 is formed of the same material as the sealing block 430 or a synthetic resin having excellent adhesion to the sealing block 430, and is provided in a state fitted to the inner extension 412 of the inner support tube 410.

As such, the coupler module 400 is designed as a minimum component unit of a cylindrical structure and can be molded in a simple mold structure. In particular, when the central block 460 and the sealing block 430 are configured separately as shown in FIG. If there is damage to the sealing block 430, there is an advantage that the maintenance cost is greatly reduced by partial replacement of parts.

7 and 8 show the overall configuration of the geomdan device, the brake hose pressure device to which the valve and valve system of the present invention is applied is moved up and down on the z-axis guide 11 to remove the brake hose 1 Take the x- and y-axis guides 21 and 23 under the longitudinal docking pressure stage 10 provided with the first docking part 12 for clamping the first bracket 2 and the lower part of the first docking part 12 x , A transverse pressure stage (20) and an injection nozzle (2) equipped with a second docking part (22) for clamping the second bracket (3) of the brake hose (1) having various angles and lengths that are moved in the y-axis direction 14) is connected to the supply of high, low pressure compressed air, the brake hose (1) the pressure leak and clogging defects are provided to measure the shape of the first and second brackets (2) (3), Robot arm by clamping the control part 40 and the brake hose 1 to set the position and angle of the first and second docking parts 12 and 22 corresponding to the type of brake hose 1 including the angle and spacing (52) It comprises a transfer hand unit 50 provided to load and unload the first and second brackets (2) and (3) to the first and second docking portions (12, 22) by an operation.

In the first docking portion 12 of the longitudinal pressure detecting stage 10, as shown in FIG. 2, the injection nozzle 14 is driven into the first bracket 2 of the brake hose constrained by the first stop piece 12b. It is in close contact with the down to supply compressed air into the hose. To this end, a coupler module for pressure inspection of the present invention is installed at the end of the injection nozzle 14.

In addition, the horizontal shaft pressure detection stage 20 is a second dock (22) in the second stop (22b) of the brake hose constrained by the second bracket (3) of the shut-off valve (24) is transferred by the drive unit 2 The bracket is pressurized and closed, and a pressure-coupler module for sealing is installed at the end of the shut-off valve 24.

At this time, the shut-off valve 24 is provided in one place so as to be fastened in one direction to the pimel bracket type as shown in Figure 9 (a), or is provided in a pair to be fastened in both directions to the eye joint bracket type as shown in Figure 9 (b). .

Referring to FIG. 6, the pneumatic inspection unit 30 is connected to the main pipe 31 connected to the injection nozzle 14 and the main pipe 31, and is formed with high and low pressure flow paths 32a and 32b. As the high pressure sensor 33 is installed, the pressure chamber 32 and the high pressure flow path 32a open and close the high pressure valve 300 to control on / off of high pressure compressed air movement supplied through the high pressure line L1. And, the low pressure flow path (32b) by opening and closing operation to control the on / off movement of the low pressure compressed air supplied through the low pressure line (L2), and when the on operation drain valve (35) for exhausting the compressed air in the main pipe (31) ) Is provided with a low pressure valve (300 '), a low pressure sensor (37) provided in the low pressure line (L2) to measure the low pressure compressed air pressure, and through the low pressure line (L2) to the low pressure valve (300') It comprises a check valve 38 for blocking the supply of low pressure compressed air backflow, and a normally closed valve 39 for controlling the supply of low pressure compressed air through the low pressure line L2.

And, the low pressure compressed air supplied to the normally closed valve 39 transmits a supply error message when the pressure value is less than or equal to the set limit by the constant pressure sensor.

In the sealing system of the brake hose pressure gauge equipped with the pressure sealing device configured as described above, the first bracket 2 composed of the pimel bracket is fastened to one end of the brake hose 1, and the pimel bracket or the eye to the other end. Even if the second hose (3) composed of a joint bracket is fastened, the coupler module that is connected to the bracket during the pressure check process using a pressure gauge device is sealed in a surface contact method and repeatedly exposed to 150 ~ 170kgf high-pressure compressed air. The load is distributed throughout the sealing block to prevent pressure leaks due to wear and deformation and to prolong the life. Especially, when a pressure leak occurs, the coupler module can be replaced promptly to reduce costs due to maintenance and improve the operation rate of the pressure gauge. It has the effect.

As described above, in the detailed description of the present invention, the most preferred embodiments of the present invention have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the protection scope of the present invention should not be limited to the above-described embodiments, but the protection scope should be recognized from the technologies of the claims to be described later and the technical means equivalent to these technologies.

1: brake hose 2: first bracket 3: second bracket
10: longitudinal axis pressure stage 11: z-axis guide
12: 1st docking part 12a: 1st pressure chamber 12b: 1st stop piece
14: injection nozzle
20: Transverse pressure suppression stage
22: second docking portion 22a: second pressure chamber 22b: second stop piece
24: shut-off valve
30: pneumatic inspection unit
31: main pipe 32: pressure chamber 32a, 32b: high, low pressure flow path
33: high pressure sensor 35: drain valve 37: low pressure sensor
38: check valve 39: normally closed valve
40: control unit 50: transfer hand unit 52: robot arm
300, 300 ': high and low pressure valve
L1: High pressure line L2: Low pressure line
400: coupler module
401, 455: locking jaw 410: inner support tube 420: outer support tube
422: outer extension 430: sealing block 432: airtight surface
440: inclined expansion portion 450: plug body 452: connector
454: Holder 460: Central block
L1: High pressure line L2: Low pressure line

Claims (6)

The high pressure of the brake hose insulator formed by the first bracket (2) composed of a pimel bracket on one end of the brake hose (1), and the second bracket (3) composed of pimel bracket or an eye joint bracket on the other end In the sealing system,
It is connected to the first bracket and injects a nozzle (14) for introducing compressed air, a shut-off valve (24) for closing the second bracket, and is connected to the injection nozzle (14), and supplies compressed air to brake hose (1) The first and second brackets (2) (3) are installed detachably on the injection nozzle (14) and the shut-off valve (24) and the pneumatic inspection unit (30) provided to measure pressure leaks and clogging defects. It comprises a coupler module 400 for sealing,
The coupler module 400,
The first and second brackets (2) (3) inner support tube 410 formed of a smaller size than the inner diameter,
The inner support tube 410 and the outer support tube 420 is provided on a concentric circle, and is formed in an expanded size compared to the outer diameter of the first and second brackets (3) (3),
The sealing block 430 is provided between the inner and outer support pipes 410 and 420, and an airtight surface 432 is formed so as to be surface-contact sealed at the ends of the first and second brackets 2 and 3 High-pressure sealing system of the brake hose pressure gauge, characterized in that made.
According to claim 1,
The airtight surface 432 of the sealing block 430 has an inclined expansion portion 440 extending so that the outer diameters of the first and second brackets 2 and 3 are accommodated, and the outer peripheral surface of the inclined expansion portion 440 is externally supported. High-pressure sealing system of a brake hose pressure intensifier, characterized in that it is provided to be supported by the outer extension 422 of the tube 420 to maintain the shape.
According to claim 1,
The coupler module 400 is detachably mounted on the plug body 450, a connector 452 is formed at one end of the plug body 450 to be fastened to the injection nozzle 14 and the shut-off valve 24, and the other end In the coupler module 400, a holder portion 454 in which the outer support pipe 420 is inserted and supported is formed, and the holder portion 454 and the coupler module 400 are engaged with each other by the locking jaws 401 and 455 to be constrained. High-pressure sealing system of the brake hose pressure gauge characterized in that provided.
According to claim 1,
A central block 460 is provided between the injection nozzle 14 and the shutoff valve 24 and the coupler module 400, and the central block 460 is fitted into the inner extension 412 of the inner support tube 410. It is formed integrally with the sealing block 430 or in a separate state, and the outer diameter of the central block 460 is formed in an extended size compared to the outer diameter of the outer support tube 420, so that the locking jaw 401 is provided. High pressure sealing system of brake hose intensifier.
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